From owner-freebsd-stable@FreeBSD.ORG Sat Sep 27 09:34:25 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5109D1065687 for ; Sat, 27 Sep 2008 09:34:24 +0000 (UTC) (envelope-from xi@borderworlds.dk) Received: from kazon.borderworlds.dk (kazon.borderworlds.dk [213.239.213.48]) by mx1.freebsd.org (Postfix) with ESMTP id 0FFF38FC14 for ; Sat, 27 Sep 2008 09:34:23 +0000 (UTC) (envelope-from xi@borderworlds.dk) Received: from dominion.borderworlds.dk (localhost [127.0.0.1]) by kazon.borderworlds.dk (Postfix) with ESMTP id ADE63170EC; Sat, 27 Sep 2008 11:34:22 +0200 (CEST) Received: by dominion.borderworlds.dk (Postfix, from userid 2000) id 4C23247A; Sat, 27 Sep 2008 11:34:22 +0200 (CEST) To: Jeremy Chadwick References: <20080927025017.GA40195@icarus.home.lan> From: Christian Laursen Date: Sat, 27 Sep 2008 11:34:21 +0200 In-Reply-To: <20080927025017.GA40195@icarus.home.lan> (Jeremy Chadwick's message of "Fri\, 26 Sep 2008 19\:50\:17 -0700") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-stable@freebsd.org Subject: Re: 7.1-PRERELEASE freezes (IPFW related) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Sep 2008 09:34:25 -0000 Jeremy Chadwick writes: > On Fri, Sep 26, 2008 at 06:21:01PM +0200, Christian Laursen wrote: >> I decided to give 7.1-PRERELEASE a try on one of my machines to find >> out if there might be any problems I should be aware of. >> >> I quickly ran into problems. After a while the system freezes >> completely. It seems to be somehow related to the load of the machine >> as it doesn't seem to happen when it is idle. I built a kernel with >> software watchdog enabled and enabled watchdog which had the nice >> effect of turning the freeze into a panic. Hopefully that will be of >> some help. >> [snip] > A couple generic things, although I think jhb@ might be able to figure > out what's going on here: > > 1) Is this machine running the latest BIOS available? > 2) Are you running powerd(8) on this box? > 3) Does disabling ACPI (it's a menu option when booting) help? > 4) Does removing "device cpufreq" help? I tried without ACPI right after writing the previous mail without any luck. However I tried turning off various stuff and found the cause of the problem. When I tried running without my ipfw rules the crashes went away. I then immediately suspected the rules using uid matching and those were indeed responsible. I am now back to running with everything I usually have running on this machine (my primary desktop) but without the ipfw uid rules and the machine is rock stable. I have been running with debug.mpsafenet="0" most likely because I have been using ipfw uid matching. Has RELENG_7 had significant changes in this area? Since I don't need these rules anymore I have just removed them. -- Christian Laursen